Portion of a brush head for electric toothbrush



FIG. 1 is a front elevation view of a portion of a brush head for an electric toothbrush according to the new design;

FIG. 2 is a rear elevation view thereof;

FIG. 3 is an enlarged top view thereof;

FIG. 4 is an enlarged bottom view thereof;

FIG. 5 is a right side elevation thereof;

FIG. 6 is a left side elevation view thereof;

FIG. 7 is front perspective view thereof, shown on a scale greater than that shown in FIG. 1 but less than that shown in FIGS. 3 and 4;

FIG. 8 is an enlarged rear perspective view of the design as shown in FIG. 7;

FIG. 9 is a rear view thereof, shown on a scale greater than that shown in FIG. 7 but less than that shown in FIGS. 3 and 4 and with the environmental portion of the brush head for electric toothbrush being partially shown;

FIG. 10 is a bottom view of the design shown in FIG. 9, on a scale greater than that shown in FIG. 9 but less than that shown in FIGS. 3 and 4;

FIG. 11 is a front perspective view of the design as shown in FIG. 10; and,

FIG. 12 is a rear perspective view of the design as shown in FIG. 10.

The dot-dash broken lines represent the bounds of the claim and form no part thereof. The dashed broken lines illustrate portions of the brush head that form no part of the claimed design. 

CLAIM The ornamental design for a portion of a brush head for an electric toothbrush, as shown and described. 